Good quality product, that works well with both Presta and Schrader valves. Fits perfect in the portable tool kit. Only one downside: it overheats quite badly, but I got an aftermarket silicon sleeve for it.

Bought for a week in Mallorca. Used to top up my tubeless tyres once I arrived. Then used in earnest out on the road to pump up another rider's front tyre for a very tight Enve rim. It popped the tyre under the bead with the second button push- which surprised me. You'll soon adjust to the lack of gauge (1 press is approx. 35 psi). Loses a star because it can go off inside my large Rapha pouch if over-packed. Bigger ones have a better system. Absolutely love it, especially the replaceable battery and spares. Am a seasoned CO2 user but worried about sealant degradation. Smaller than two CO2 cartridges and adaptor.